Good stuff. If I sent my blower, what would be the cost to refurbish it like this?

How does this differ from the official blower fuse retrofit (strip fuse)?

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

The strip fuse retrofit was only for W124s.

In a W124, the blower was originally a 25 A fuse in position 12. They decided later they really needed 30 A and the contact points were marginal for the constant load of the big honking blower in a 124. So they did an engineering change to a shock tower mounted 30 A strip fuse holder. After a certain serial # all the 124s got the holder but it was offered for retrofit in the older 124s.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

It certainly was not! My blower fuse (#8 iirc) melted down my fusebox, and I did this on my 83. Mounted the fuse to the inner fender under the hood.

I'm a little more mechanically savvy now and would want to solve the root of the problem these days. But I thought that WAS the solution back then.

I'll probably refurb my blower just because (doesn't draw too much currently), and then also protect with more/better fuses.

My old 2003 thread (yes I'm a long timer here though many wouldn't know it. An old mercedesshop guy )

#8 fuse blowing, AC condenser drain

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

No need to send me the blower, I'll just send you one of these plug and play fuse links for $15. (If your blower is not working properly than that's a problem)


The official fuse strips for the w126 blowers ( and w124 as stated above) effectively removes the fuse from the fuse box. The w123 never had an "official" fuse strip. But basically you keep your original fuse in the fuse box and this just puts another fuse closer in line to the potential problem.

Attached Thumbnails

 

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1983 123.133 California
- GreaseCar Veg System

Maybe it's not official but it works just fine on the w123 and installs in a straightforward way. Plus it's accessible.

I like your harness for putting another/smaller/faster blowing fuse closer to the load.

But I like the idea of refurbishing the blower to reduce load anyway. I thought you were doing blower refurbishment...

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

Best I can do about blower refurbishment is replacing the brushes, and maybe replacing faulty wiring. Or sending you one of the used units I have laying around.

__________________
1983 123.133 California
- GreaseCar Veg System

Nice job DV, I think I'll buy another fuse from you again. I'll message you next week when I get back from vacation.